INVESTMENTS - Summary of Allowance for Expected Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 12,645	$ 383	$ 11,733	$ 313
Expected credit losses on securities where credit losses were not previously recognized	3,742	6,899	4,355	6,908
Additions (reductions) for expected credit losses on securities where credit losses were previously recognized	(1,223)	14	(304)	92
Impairments of securities which the Company intends to sell or more likely than not will be required to sell	0	0	0	0
Securities sold/redeemed/matured	(4,613)	(2)	(5,233)	(19)
Balance at end of period	$ 10,551	$ 7,294	$ 10,551	$ 7,294